/* Kaiyun Sports — self-contained responsive stylesheet */
:root{--bg:#f5fbff;--paper:#fff;--wash:#eaf7fc;--light:#dff5fb;--cyan:#25c8d1;--sky:#25b6e8;--blue:#1787db;--navy:#174b78;--heading:#173b60;--body:#2d4359;--muted:#687f93;--line:#dcebf3;--footer:#123653;--radius:17px;--shadow:0 12px 38px rgba(23,75,120,.065)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;font-family:Arial,'PingFang SC','Microsoft YaHei',sans-serif;color:var(--body);background:var(--bg);font-size:16px;line-height:1.8}body.drawer-open{overflow:hidden}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer}button:focus-visible,a:focus-visible{outline:3px solid var(--cyan);outline-offset:4px}img{max-width:100%}.container{max-width:1160px;margin:auto;padding:0 24px}.skip-link{position:fixed;top:-80px;left:12px;background:white;padding:12px;z-index:200}.skip-link:focus{top:12px}
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;box-shadow:0 3px 20px rgba(22,59,96,.035)}.header-inner{min-height:72px;display:flex;align-items:center;gap:22px}.brand{display:inline-flex;align-items:center;justify-content:flex-start;flex-shrink:0;color:var(--navy);text-decoration:none!important}.logo-image{display:block;width:auto;max-width:168px;height:37px;object-fit:contain}.brand-word{font-size:20px;font-weight:800;white-space:nowrap;line-height:1.1}.brand-word small{font-size:8px;display:block;letter-spacing:1.4px}.desktop-nav{display:flex;align-items:center;justify-content:center;flex:1;gap:clamp(8px,1.3vw,20px)}.desktop-nav a{font-size:14px;color:var(--navy);font-weight:650;padding:10px 1px;white-space:nowrap}.desktop-nav a[aria-current=page]{color:#078fac;border-bottom:2px solid var(--cyan)}.main-btn{display:inline-flex;align-items:center;justify-content:center;min-width:82px;height:42px;padding:0 20px;border-radius:999px;background:linear-gradient(110deg,#25c8d1,#25b6e8,#1787db);color:#fff;font-weight:700;text-decoration:none!important;white-space:nowrap;box-shadow:0 5px 17px rgba(37,182,232,.16)}.main-btn:hover{filter:brightness(.94)}.menu-toggle{display:none;width:42px;height:42px;flex-shrink:0;border:1px solid var(--line);border-radius:12px;background:#fff;padding:11px}.menu-toggle span{display:block;height:2px;background:var(--heading);margin:4px 0;border-radius:4px}.drawer-overlay{position:fixed;inset:0;background:rgba(14,44,69,.5);opacity:0;visibility:hidden;pointer-events:none;z-index:65;transition:opacity .2s,visibility .2s}.drawer{position:fixed;top:0;left:0;bottom:0;width:min(86vw,340px);z-index:66;background:#fff;overflow-y:auto;padding:18px 22px 35px;transform:translateX(-103%);visibility:hidden;pointer-events:none;transition:transform .22s,visibility .22s;box-shadow:12px 0 32px #12365322}.drawer-open .drawer-overlay{opacity:1;visibility:visible;pointer-events:auto}.drawer-open .drawer{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-top{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:15px}.drawer-close{font-size:29px;color:var(--heading);border:0;background:none;padding:0 8px}.drawer-group{margin:22px 0 7px;color:var(--blue);font-size:13px;font-weight:800}.drawer>a{display:block;padding:8px 5px;color:var(--body);border-bottom:1px solid #eff6fa}.noscript-nav{display:flex;gap:12px;overflow:auto;padding:7px 16px;background:#eaf7fc}.noscript-nav a{white-space:nowrap}
main{min-height:60vh}.hero{padding:48px 0 28px}.hero-grid{display:grid;grid-template-columns:1.07fr .93fr;align-items:center;gap:32px}.eyebrow{color:#078fac;font-size:13px;font-weight:800;letter-spacing:.12em;margin-bottom:10px}.hero h1{font-size:clamp(30px,3.5vw,40px);line-height:1.35;color:var(--heading);margin:0 0 18px;letter-spacing:-.02em}.lead{font-size:17px;max-width:740px;color:#48647c;line-height:1.85}.hero .lead{max-width:600px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.outline-btn{border:1px solid #9ddce9;border-radius:999px;padding:7px 20px;font-weight:700;display:inline-flex;align-items:center}.media{margin:0;display:flex;justify-content:center;align-items:center;overflow:hidden;background:var(--wash);border-radius:14px;border:1px solid var(--line)}.media img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.media--hero{height:310px}.media--wide{height:220px}.media--banner{height:245px}.media--portrait{height:340px;max-width:300px}.media--missing{background:linear-gradient(130deg,#eaf7fc,#dff5fb);position:relative}.media--missing:after{content:'';width:28%;height:2px;background:#c8e8f2;transform:rotate(-35deg);opacity:.6}.section{padding:30px 0}.section-soft{background:linear-gradient(135deg,#ecf9fd,#f7fcff);border-block:1px solid var(--line)}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:22px;margin-bottom:22px}.section-heading h2,.section h2{color:var(--heading);font-size:26px;line-height:1.4}.section-heading h2{margin:0}.section-heading p{margin:5px 0 0}.muted{color:var(--muted);font-size:14px}.kicker{color:#0c91b0;font-weight:800;font-size:13px;letter-spacing:.05em}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.card{background:var(--paper);padding:24px;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.card h3{margin:6px 0 10px;font-size:19px;line-height:1.45;color:var(--heading)}.card p{margin:0 0 16px}.card a:not(.text-link){font-weight:700}.text-link{font-weight:800}.featured-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:20px}.feature{background:white;border-radius:var(--radius);padding:25px;border:1px solid var(--line)}.feature .media{margin-bottom:20px}.feature h3{font-size:23px;color:var(--heading);line-height:1.4}.stack{display:grid;gap:16px}.stack .card{box-shadow:none}.simple-list{padding-left:19px}.simple-list li{padding:6px 0}.topic-strip{display:flex;flex-wrap:wrap;gap:11px}.topic-strip a{border:1px solid #b9e6ed;background:white;border-radius:999px;padding:7px 16px;color:var(--navy);font-weight:700;font-size:14px}.article-head{padding:47px 0 20px}.article-head h1{color:var(--heading);font-size:34px;line-height:1.35;margin:8px 0 15px}.article-body{max-width:820px;margin:0 auto;padding:7px 24px 40px}.article-body h2{font-size:25px;color:var(--heading);margin:39px 0 14px;line-height:1.4}.article-body h3{font-size:19px;color:var(--heading);margin:24px 0 10px}.article-body p{margin:0 0 18px}.article-body ul,.article-body ol{padding-left:24px}.article-body li{padding:5px 0}.article-body .media{margin:20px 0 25px}.article-body .media--portrait{margin-left:auto;margin-right:auto}.note{border-left:4px solid var(--cyan);background:#eaf7fc;padding:17px 20px;border-radius:0 12px 12px 0;margin:24px 0}.quote{font-size:19px;font-weight:650;color:var(--navy);border-left:3px solid var(--sky);padding:10px 22px;margin:18px 0;background:#f3fbfe}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:22px 0}.comparison>div{background:white;border:1px solid var(--line);padding:20px;border-radius:14px}.comparison h3{margin-top:0}.table-wrap{overflow-x:auto;margin:22px 0}table{width:100%;border-collapse:collapse;min-width:520px;background:white}th,td{text-align:left;padding:13px 16px;border:1px solid var(--line);vertical-align:top}th{background:#eaf7fc;color:var(--heading)}.article-foot{background:#fff;border-block:1px solid var(--line);padding:28px 0 50px}.article-foot h2{font-size:22px;color:var(--heading)}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.related-grid a{display:block;padding:19px;border:1px solid var(--line);border-radius:12px;background:var(--bg);font-weight:800}.index-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}.index-list a{background:white;padding:14px 18px;border:1px solid var(--line);border-radius:12px;font-weight:700}.faq details{border-bottom:1px solid var(--line);padding:13px 0}.faq summary{cursor:pointer;color:var(--heading);font-weight:750}.faq details p{margin:10px 0 4px}.site-footer{background:var(--footer);color:#eaf7ff;padding:40px 0 22px;margin-top:18px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}.site-footer a{color:#eaf7ff;display:block;margin:6px 0}.site-footer .brand{display:inline-flex}.footer-logo{height:33px}.site-footer h2{font-size:16px;color:white;margin:0 0 12px}.site-footer p{font-size:14px;color:#c7e6f4}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #ffffff24;padding-top:20px;margin-top:26px;color:#d1ecf6;font-size:12px}.mobile-bottom-nav{display:none}.back-to-top{position:fixed;right:22px;bottom:25px;width:43px;height:43px;border:0;border-radius:50%;background:var(--blue);color:#fff;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .2s;z-index:40}.back-to-top.is-visible{opacity:1;pointer-events:auto}
@media(max-width:1080px){.desktop-nav{gap:9px}.desktop-nav a{font-size:13px}.header-inner{gap:14px}.logo-image{max-width:125px}}
@media(max-width:980px){.header-inner{height:60px;min-height:60px;justify-content:space-between}.menu-toggle{display:block}.desktop-nav{display:none}.brand{position:absolute;left:50%;transform:translateX(-50%)}.logo-image{height:29px;max-width:140px}.header-cta{height:39px;font-size:13px;padding:0 14px}.drawer .brand{position:static;transform:none}.drawer .logo-image{height:30px}.footer-grid{grid-template-columns:2fr 1fr 1fr}}
@media(max-width:700px){body{font-size:15px;line-height:1.78;padding-bottom:55px}.container{padding:0 16px}.hero{padding:28px 0 15px}.hero-grid{grid-template-columns:1fr;gap:20px}.hero h1{font-size:29px}.lead{font-size:15.5px}.media--hero{height:210px}.media--wide{height:160px}.media--banner{height:175px}.media--portrait{height:300px}.section{padding:25px 0}.section-heading h2,.section h2{font-size:22px}.section-heading{align-items:start;flex-direction:column;gap:4px}.card-grid{grid-template-columns:1fr}.card{padding:20px}.featured-grid{grid-template-columns:1fr}.feature{padding:19px}.comparison{grid-template-columns:1fr;gap:10px}.article-head{padding:30px 0 12px}.article-head h1{font-size:27px}.article-body{padding:0 16px 30px}.article-body h2{font-size:21px;margin-top:28px}.article-body h3{font-size:18px}.related-grid{grid-template-columns:1fr}.index-list{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:20px}.footer-grid>div:first-child{grid-column:span 2}.footer-bottom{flex-direction:column;gap:6px}.mobile-bottom-nav{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;height:56px;z-index:45;background:#fff;box-shadow:0 -3px 15px #12365315;border-top:1px solid var(--line)}.mobile-bottom-nav a{color:var(--navy);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}.mobile-bottom-nav a[aria-current=page]{color:#039bb8}.back-to-top{bottom:70px;right:13px}}
@media(max-width:360px){.header-cta{padding:0 9px;min-width:70px}.brand-word{font-size:16px}.logo-image{max-width:112px}.header-inner{gap:5px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}